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<head>
    <meta charset="UTF-8">
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    <title>Document</title>
</head>
<style>
    div {
        border: 1px solid #ccc;
        height: 50px;
        line-height: 50px;
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    div:nth-child(odd) {
        border-right: none;
    }
</style>
<body>
    <div class="box1" style="display: table-cell">第一列第一列第一列</div>
    <div class="box2" style="display: table-cell;">第二列</div>
    <div class="box2" style="display: table-cell;">第3列</div>
    <div class="box2" style="display: table-cell;">第4列</div> 
    <div class="box3" style="display: table-cell;"> 第五列</div>
    
</body>
</html>